Switch in a 2012 Peterbilt 388. Has a image of a fuel pump with right and left arrows.
what is this switch for?
Discussion in 'Questions From New Drivers' started by AlexFromMD, Jul 23, 2017.
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Steel Dragon and G13Tomcat Thank this.
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Puppage Thanks this.
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Some Petes had two fuel gauges. This switch shows you the level in the tank selected. It doesn't select which tank the fuel gets drawn from.
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That's not exactly a good idea. That tells me there might be no returns present in either tank circulating fuel to keep both tanks warm in winter. I once lost a tank when the shop mechanic failed to reopen a fuel feed valve for it in the dead of winter, we find out that there is a problem when that tank gelled through and was full. It was a lesson learned the hard way. Never forgotten.
Ive never had to use that kind of switch, but you would cycle that switch several times a day and night to keep your fuel more or less equalized coming down. -
You used to have an option to have a fuel gauge for each tank, this just gives a read out of whichever tank it is pointing to on the one gauge
@AlexFromMD next time you are pretty well empty and go to fuel just fill up one side and give the switch a try, then finish filling up, you will see exactly how it works. It is useful to know if your truck is only drawing from one side, think about the threads of freightliners mostly where the complaint is "gauge reads empty but truck ran out and one side is full and other side is empty"x1Heavy Thanks this. -
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They have that on airplane... You weren't in a Peterbilt you were in a Cessna... Drunk again
Call_Me_The_Breeze and Lepton1 Thank this.
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